Which statement about electric and magnetic fields is true?

A. Electric fields and magnetic fields loop from north to south.

B. Electric fields must leave a positive charge and end on a negative charge.

C. Electric fields and magnetic fields start at a postive and end at a negative.

D. Magnetic fields must start at the north pole of a magnet and end at the south pole of a magnet.

D. ) Magnetic fields must start at the north pole of a magnet and end at the south pole of a magnet.

Explanation:

I took the quiz and got this right :)

Good luck to all future comers...

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what statement best describes the difference between the sympathetic and parasympathetic nervous systems?

the sympathetic nervous system prepares the body for intense physical activity and is often referred to as the fight-or-flight response. the parasympathetic nervous system has almost the exact opposite effect and relaxes the body and inhibits or slows many high energy functions.

answer:

the water molecules are transferred from the roots to the stem or top parts of the tall tree because of important properties of water which are adhesion, cohesion and capillary action. cohesion is the property of water molecules keeps water molecules in a combined state by sharing of bonds between them at the atomic level. adhesion allows the interaction of water molecules with other substances or substrate. adhesion will cause the attachment of water molecules to the wall of the vessel (xylem) of the plant. capillary action occurs when the adhesive force to the vessel wall is stronger than the cohesive force between water molecules. capillary action mimics the transfer of water from a tube or pipe. in this way water utilizes its property to transfer water from down to top level of the plant.